Error on activation

I am getting errors like this when I activate and go to the Meetings Room Setup page to get started

Warning: require(…/wp-content/plugins/book-a-room/templates/mainSettings/adminMain.php): failed to open stream: No such file or directory in …/wp-content/plugins/book-a-room/bookaroom-meetings-admin.php on line 167

Fatal error: require(): Failed opening required ‘…/wp-content/plugins/book-a-room/templates/mainSettings/adminMain.php’ (include_path=’.:’) in …/wp-content/plugins/book-a-room/bookaroom-meetings-admin.php on line 167